Split #37 — the solution

The three rounds from November 5, 2026: twelve numbers each, split into four groups of three that add to the target — the one way each round allows, with its decoys and where the reasoning starts.

Round 1 — target 26

The numbers: 9, 20, 1, 2, 8, 12, 6, 14, 18, 4, 3, 7. 2 decoys.

The groups: 9 + 14 + 3, 20 + 2 + 4, 1 + 18 + 7, 8 + 12 + 6.

The decoys — triples that add to 26 but are not in the answer: 2 + 6 + 18; 8 + 14 + 4.

Where to start: 9, 20, 1, 12, 3 and 7 sit in only one on-target triple, so their groups are certain — start there.

Round 2 — target 34

The numbers: 7, 17, 15, 20, 10, 14, 16, 1, 11, 4, 19, 2. 4 decoys.

The groups: 7 + 16 + 11, 17 + 15 + 2, 20 + 10 + 4, 14 + 1 + 19.

The decoys — triples that add to 34 but are not in the answer: 7 + 17 + 10; 17 + 16 + 1; 14 + 16 + 4; 11 + 4 + 19.

Where to start: 15, 20 and 2 sit in only one on-target triple, so their groups are certain — start there.

Round 3 — target 30

The numbers: 9, 5, 20, 18, 10, 3, 15, 4, 11, 2, 6, 17. 6 decoys.

The groups: 9 + 18 + 3, 5 + 10 + 15, 20 + 4 + 6, 11 + 2 + 17.

The decoys — triples that add to 30 but are not in the answer: 9 + 10 + 11; 9 + 15 + 6; 9 + 4 + 17; 18 + 10 + 2; 10 + 3 + 17; 15 + 4 + 11.

Where to start: 5 and 20 sit in only one on-target triple, so their groups are certain — start there.

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About Split

Split is Noggin’s number puzzle, on the second shelf: twelve numbers into four groups of three, three rounds a day, outside the daily line-up. How to play Split, or play today’s.